South African Crustacea. 45 



last conclusion, however, it has to be considered that, though de 

 Haan's description of his Squilla oratorio, was not published till 

 1849, the named drawing of it (pi. 51, fig. 2) in the Atlas of the 

 Crustacea Japonica antedates Berthold's paper. While giving the 

 reference to Berthold's S. affinis as a synonym of S. oratoria, de 

 Haan, the Dutch writer clearly makes this claim, when he says, 

 "the name of the species on the long since published plate holds 

 good." Certainly the distinguishing marks of S. affinis, so far as 

 they are explained by Berthold and accepted by Dr. Bigelow, seem 

 to be made sufficiently clear in de Haan's figure of S. oratoria. 

 The principal points are that this species has large triangular eyes, 

 with corneal axis oblique and at least as long as the peduncular axis, 

 the median carina of the carapace not bifurcated for more than one- 

 fourth of its length, and the finger of the raptorial claw with outer 

 margin little or not at all sinuate. Dr. Nobili (loc. cit. 1903) 

 describes a form from Nias and Singapore under the name Squilla 

 affinis, Berthold, var. intermedia. 



Squilla ncpa, as described by Dr. Bigelow, has very small eyes, 

 the corneal axis at right angles to the peduncular and about three- 

 fourths its length, the median carina of the carapace bifurcate for 

 nearly or more than half its length, and the finger of the raptorial 

 claw deeply sinuate on its outer margin. The specimen sent me 

 from the Durban Museum agrees with these and other characters 

 given by the same author. The first three exposed thoracic segments 

 are variously bilobed at the sides. The distal border of the telson 

 has between the six marginal spines on each half three submedian, 

 ten intermediate, and one lateral denticle. 



Length of specimen, from front of rostrum to a point level with 

 apex of hindmost telsonic spines, 145 mm. A second specimen, 

 dried, is 155 mm. long, with intermediate spines 8 and 9 in number. 



Locality. Durban. 



ISOPODA GENUINA. 



TRIBE FLABELLIFEEA. 



FAMILY EUEYDICIDvE. 



1880. Cirol-anidte, Harger, Eep. U.S. Fish. Comm. for 1878, p. 304. 

 1890. Cirolanidce, Hansen, Vid. Selsk. Skr., Ser. 6, vol. iii., p. 275. 

 1905. EurydicidcB, Stebbing, in Herdman's Eep. Ceylon Pearl 

 Fisheries, pt. iv., Isopoda, p. 10. 



